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冰川冻土 ›› 2022, Vol. 44 ›› Issue (3): 946-953.doi: 10.7522/j.issn.1000-0240.2021.0090

• 冰冻圈与全球变化 • 上一篇    下一篇


钟歆玥1(), 康世昌2,3, 郭万钦2, 吴晓东2, 陈金雷2   

  1. 1.中国科学院 西北生态环境资源研究院 甘肃省遥感重点实验室,甘肃 兰州 730000
    2.中国科学院 西北生态环境资源研究院 冰冻圈科学国家重点实验室,甘肃 兰州 730000
    3.中国科学院大学,北京 100049
  • 收稿日期:2021-10-03 修回日期:2021-10-31 出版日期:2022-06-25 发布日期:2021-12-09
  • 作者简介:钟歆玥,副研究员,主要从事冰冻圈与气候变化研究. E-mail: xyzhong@lzb.ac.cn
  • 基金资助:

The rapidly shrinking cryopshere in the past decade: an interpretation of cryospheric changes from IPCC WGI Sixth Assessment Report

Xinyue ZHONG1(), Shichang KANG2,3, Wanqin GUO2, Xiaodong WU2, Jinlei CHEN2   

  1. 1.Key Laboratory of Remote Sensing of Gansu Province,Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences,Lanzhou 730000,China
    2.State Key Laboratory of Cryospheric Science,Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences,Lanzhou 730000,China
    3.University of Chinese Academy of Sciences,Beijing 100049,China
  • Received:2021-10-03 Revised:2021-10-31 Online:2022-06-25 Published:2021-12-09



关键词: IPCC, 第六次评估报告, 冰冻圈, 气候变化, 预估


The Working Group I report of the Sixth Assessment Report (AR6) of the Intergovernmental Panel on Climate Change (IPCC) was released in August 2021. Base on updated and expanding data, AR6 presented the improved assessment of past changes and processes of cryosphere. AR6 also predicted the future changes using the models in CMIP6. The components of cryosphere were rapid shrinking under climate warming in the last decade. There were decreasing trends in Arctic sea-ice area and thickness. Sea-ice loss was significant. The Greenland Ice Sheet, the Antarctic Ice Sheet and all glaciers lost more mass than in any other decade. Global warming over the last decades had led to widespread permafrost warming, active layer thickness increasing and subsea permafrost extent reducing. Snow cover extent in the Northern Hemisphere also decreased significantly. However, the variations of snow depth and snow water equivalent showed great spatial heterogeneity. The rapid shrinking of the cryosphere accelerated the global mean sea level rise. The impact of human activities on cryosphere will become more significant in the future. The Arctic sea-ice area will decrease, and the Arctic Ocean will likely become practically sea ice-free. The Greenland Ice Sheet, the Antarctic Ice Sheet and glaciers will continue to lose mass throughout this century. Permafrost and Northern Hemisphere snow cover extent will continue to decrease as global climate continues to warm. In addition, there are still uncertainties in the prediction of cryosphere due to the absence of observations, the poor sensitivity of models to the components and processes of cryosphere, and the inexplicit represent of the mechanism of light-absorbing impurities. More attentions should be paid on these issues in the future.

Key words: IPCC, AR6, cryosphere, climate change, projection


  • P343.6